* a person who is a little stupid or unable to concentrate.
>> I'm such an airhead today. I forgot to tell my mom what my dad asked me to.
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a.k.a.
** also known as (pronounce each letter a - k - a). Used for someone or something with two names.
>> Luís Inácio da Silva a.k.a Lula , is one of the most important leaders of the world.